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A Feature Selection Method for Multivariate Performance Measures
PrePrint
ISSN: 0162-8828
Qi Mao, Nanyang Technological University, Singapore
Ivor Wai-Hung Tsang, Nanyang Technological University, Singapore
Feature selection with specific multivariate performance measures is the key to the success of many applications, such as image retrieval and text classification. The existing feature selection methods are usually designed for classification error. In this paper, we propose a generalized sparse regularizer. Based on the proposed regularizer, we present a unified feature selection framework for general loss functions. In particular, we study the novel feature selection paradigm by optimizing multivariate performance measures. The resultant formulation is a challenging problem for high-dimensional data. Hence, a two-layer cutting plane algorithm is proposed to solve this problem, and the convergence is presented. In addition, we adapt the proposed method to optimize multivariate measures for multiple instance learning problems. The analyses by comparing with the state-of-the-art feature selection methods show that the proposed method is superior to others. Extensive experiments on large-scale and high-dimensional real world datasets show that the proposed method outperforms $l_1$-SVM and SVM-RFE when choosing a small subset of features, and achieves significantly improved performances over SVM$^{perf}$ in terms of $F_1$-score.
Index Terms:
Classifier design and evaluation,Computing Methodologies,Artificial Intelligence,Learning,Machine learning,Pattern Recognition,Design Methodology,Feature evaluation and selection
Citation:
Qi Mao, Ivor Wai-Hung Tsang, "A Feature Selection Method for Multivariate Performance Measures," IEEE Transactions on Pattern Analysis and Machine Intelligence, 20 Dec. 2012. IEEE computer Society Digital Library. IEEE Computer Society, <http://doi.ieeecomputersociety.org/10.1109/TPAMI.2012.266>
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